Examine source code of Rocket Launch

{
  "name": "Shuttle Launch",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "shuttle_small_cropped2.jpg"
    },
    "colors": {
      "frame": "rgba(4, 5, 13, 1)",
      "tab_background_text": "rgba(199, 145, 36, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(255, 162, 0, 1)",
      "toolbar_field": "rgba(56, 56, 56, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{efcbf8eb-237d-416d-ae52-366cdac03c42}"
    }
  }
}